So in short:
One need to beg for old content's clear because of the lock out..
One can hardly show off experience because it takes time..

One time i randomly joined a pf for T5 party, was a healer at that time and after failing 2 times, the other healer bailed saying because it's very late of the night.. Then the party leader, the tank gave me a friend request and had been pming me for a week even when i was in a shiva farming party, he pmed me everytime i was out from duty (this is really creepy).. Then he asked that me, taking anoter 6 people with me to help him clear T5.. I forwarded his need to the shiva party at that time only to get laughed at the nonsense idea of bringing 7 people to help a stranger.. So i'm just balancing out that advertising and showing yourself isnt enough.. You'll need the mental of a beggar and patient, which is very well reversed considering you cant have patient from PUG..