I think there can be many reasons why people tank
- the bubble
- to get someone out of a qualifier
- big pay jumps
- for points in a ranking
- to annoy people
I must admit I do it when it come to my advantage, especially when I'm short stacked. The only time I sometimes do it with a bigger stack, is in qualifiers. When the short stack will be blinded out, 'cause of the time and therefore blind jump, I might do it once in a while