hopin´ I´m right in here.
Every time I come back to AR15.com I´m searching my last posts to take a look what happened there.
But anyhow I can´t find them.
Can you give me some advice please?
A paid membership will get you subscriptions and a jump to your last post button.
ETA: You'll get a jump to last post viewed button as well.
If you become a team member you can see all your lasts posts. Without a membership there is really no way, I guess you could use the the bookmarks feature on your browser.
If you pick up a team membership and then go into options and click auto-subscribe then when you get back online you just click subscriptions and it will have a list of everything you have posted in with little green buttons next to each thread. The little green button will take you back to your exact post in that thread. When you are a team member you can also set it so that the OP's posts are highlighted its very convenient.
There are a few different levels with different benefits. Read through the descriptions before you buy to make sure you get the options you want.