Ignore friendship suggestions if you have:
Hidden profile.
Steam level less than 10.
Vac ban

Delete from friends for:
Hidden profile.
Begging
Phishing (from your infected account).
Spam invitations to join the group.
Vac ban

Shortly about myself:
If you have a conversation or a question for me, write, talk and discuss. Chatter is extremely unacceptable, because a waste of time for me.

I'm not playing alone. Therefore, an invitation to throw is not worth it - in 99% of cases it will be ignored.

With great interest I try to view your unique profiles, workshop, screenshots, artwork, friends list, etc.