backtagging: yes, always. 
threadhopping: please ask first.
fourthwalling: bow his mind 
cross-canon: forever and always
canon point: current through no way home
shipping: i never assume shipping in any thread - m/m, m/f - i will not play peter any younger than 16 please and thank you but am happy to age up.
               yes: mj, tony, strange, other peter parkers, steve
               maybe: ned, bucky, bruce
               no: loki, thor, most villains. please ask in advance.
faves: all aus. gen - esp found family or au families (super family, please give him stony or ironstrange dads). slowburns. ust. angst. mindless fluff. format: typically brackets, but will match prose.

hugging/kissing: yes please - make him a nervous babbling mess it will be great
flirting: yes please!
fighting: any time - i love fight and action threads. just remember he's super human.
injuring: go for it - please ask if death is involved but otherwise go nuts