- when a plus_sign or cross (that is symmetrical or fairly symmetrical along its vertical and horizontal axes) is seen in a post, especially as symbol which is alone (not near other symbols)
- [mathematics] positiveness
8chan + drawme website = 8chan_drawings.
This symbol could also mean "I read this and liked it" with the absence of it indicating that the text has not been read by whoever is using this symbol with this Derridean meaning (it is not very Derridean though since "+" can mean or probably has meant "positiveness" in a general manner in multiple cases), list example:
+ http://archive.4plebs.org/pol/thread/40093859/#40094237 + http://archive.4plebs.org/pol/thread/40189718 + http://archive.4plebs.org/pol/thread/40202033 + http://archive.4plebs.org/pol/thread/40572367 + http://archive.4plebs.org/pol/thread/40630337/ + http://boards.4chan.org/pol/thread/40721499 http://archive.4plebs.org/pol/thread/40083040 http://archive.4plebs.org/pol/thread/40093859 http://archive.4plebs.org/pol/thread/40093859/#40094909 http://archive.4plebs.org/pol/thread/40095995 http://archive.4plebs.org/pol/thread/40095995/#40105237 http://archive.4plebs.org/pol/thread/40164975 http://archive.4plebs.org/pol/thread/40208421 http://archive.4plebs.org/pol/thread/40286995 http://archive.4plebs.org/pol/thread/40299062 http://archive.4plebs.org/pol/thread/40407468 http://archive.4plebs.org/pol/thread/40431808 http://archive.4plebs.org/pol/thread/40469746 http://archive.4plebs.org/pol/thread/40470267 http://archive.4plebs.org/pol/thread/40488358 http://archive.4plebs.org/pol/thread/40559030 http://archive.4plebs.org/pol/thread/40584016 http://archive.4plebs.org/pol/thread/40640988