What the best way to keep and save tweets of my timeline ?

I’m a software and web developer and this is a great idea, I’m going to look into the possibility of developing something like this. (Got my first twitter account a few days ago!)

You can, in fact, there is an option to make an RSS feed of your twitter :).
It’s on the address bar, just like with any other website.

Eh, twitter never deletes posts. You can go and read everything in your timeline, it just takes going back a few pages [or a lot].

[Twitter user since 2008]

Are you using www.tweetdeck.com?

There is a limit of 30 days on hashtags. You can set up archives www.twapperkeeper.com