If you need a beta either for just a quick opinion, or an epic trilogy that you've been writing for the last ten years I am happy and willing to collaborate. I have my own stories so I know the toils of author-dom, but I have mucho tiempo libre right now and I tend to make time for beta-ing, so let me know!
I can beta for any maturity rating or genre. I can't think of a single thing in a story that could bother me enough to not help out an author, so if you need someone open minded I'm good for that too.
Send me a PM or a comment and I'll get back to you in a flash. (I sounded a bit like an answering machine there, oops)
Best of Luck,
Tori