Are these fine to say ?
1) Thanks for dropping by my profile

2) Thanks for dropping by on my profile

3) Thanks for dropping in on my profile

Question

Are these fine to say ?
1) Thanks for dropping by my profile

2) Thanks for dropping by on my profile

3) Thanks for dropping in on my profile

Answer

Thanks for spending you time to comment on this such an 'unrated' question.
I'm very appreciated it.

Answer

Even though this is an expired question, I felt the need to answer / add a comment anyway.

One and three are fine, but on two the grammar isn't correct. The basic message is understandable but not something you should say. It's missing something. If you added "in on" like you did on three, it'd be fine but without that "in" it becomes wrong.

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