Wikipedia:Articles for deletion/Justin Bieber on Twitter
The article has many reliable sources, very specifically the claims in national newspapers that he is the second most popular celebrity Twitter user (presumably in the world?), which counts as notable in my book. My personal opinion, however, can be summed up quite nicely with http://www.youtube.com/watch?v=r0hfg1htnM4 this - oh how I wish  was a valid argument to use for AfD at times like these
— User:Ritchie333, 10:15, 29 June 2012 (UTC)
Stance: keep
Cited policy: WP:IDONTLIKEIT (Wikipedia:Arguments to avoid in deletion discussions)