Thank you for attending the lecture in Steemit-Crypto-Academy Season 3 & doing the homework task-3

> So the amount is the only change made for use case B, however for use case A had a constant send amount.

That's correct. When all the parameters are different for different users, you can directly customize the parameters in **Accounts** Box and then hit the Send button.

> This feature is super cool because of its convenience and its leverage over fee charges. Making multiple transactions using a multi sender dapp is fee efficient

There are two things:-

- Transaction
- Output

There can be a single transaction, with a single output(destination address)

There can be a single transaction with multiple outputs(destination addresses)

In both cases, the transaction fees would be more or less the same(although the exact figures vary depending on the network and fee calculation). So the point to note here is that the fee is charged based on the transaction, not based on the output. That is why batch-sending to hundreds of outputs becomes cost-effective.

> If you enter a wrong address either the sending or receiving address the transaction will not be sent due to the errors in the parameters.

An Address may be wrong for the sender but may not be wrong for the Blockchain. 

So, there is a difference between **invalid** and **incorrect/wrong** addresses.

An invalid address is not recognized by the blockchain. In Steem Blockchain, you can say this username does not exist or is not created yet.

An incorrect address(Possibly a Steem Address typo) may still be a valid address, but may not be the address you intend to make a transfer to, and in that case, you might end up losing your fund.

In  Steem Blockchain, we have witnessed numerous cases of phishing attempts. 

For example, @huobi-pro is the actual/official Exchange account of Huobi Exchange, but due to address typo it could become @hubi-pro which is a phishing account to prey upon the address typos. 

So @hubi-pro in this case is an incorrect address for a sender, but a valid address for Steem Blockchain. Therefore always be careful and attentive when you fill out the data in the **Accounts** Box using Steemyy. 

Steemyy does allow the transaction to go through in the cases of a valid address(recognized by Steem Blockchain), but it does not allow it in the case of invalid addresses.


**Observation/Suggestion/Feedback:-**
- The author has demonstrated(with a real transaction) "how to send different amounts to different users with different memos" & "how to send repetitive transfer at a predefined interval at one click" using Steemyy with all the relevant screenshots included. 
- The author has also demonstrated how to batch send using the Multisender app in Etherum Blockchain with all the relevant screenshots included.
- Quality Analysis of wrong/invalid address is missing(although the user has practically showcased it).
- Always highlight/emphasize the specific areas of a screenshot(relevant to a particular use-case) to make it easy for the readers to understand.

Thank you.

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**Homework Task -3 successfully accomplished**
**[5.5]**

Criteria|Calculation
------|------
Presentation| 0.5/2
Consistency, Compliance with Topic| 1/2
Quality of Analysis| 0/2
Real Transactions| 2/2
Originality| 2/2
***Total***| ***5.5/10***