They already have. There is all kind of crap embedded in the blockchain forever - Satoshi's paper, a picture of the Bitcoin logo, ASCII cartoons, poems, encrypted messages, a Wikileaks dump and whatnot.
It was the Bitcointalk forum that inspired us to create Bitcointalksearch.org - Bitcointalk is an excellent site that should be the default page for anybody dealing in cryptocurrency, since it is a virtual gold-mine of data. However, our experience and user feedback led us create our site; Bitcointalk's search is slow, and difficult to get the results you need, because you need to log in first to find anything useful - furthermore, there are rate limiters for their search functionality.
The aim of our project is to create a faster website that yields more results and faster without having to create an account and eliminate the need to log in - your personal data, therefore, will never be in jeopardy since we are not asking for any of your data and you don't need to provide them to use our site with all of its capabilities.
We created this website with the sole purpose of users being able to search quickly and efficiently in the field of cryptocurrency so they will have access to the latest and most accurate information and thereby assisting the crypto-community at large.
> xxd -seek 20132471 -len 7093 ~/.bitcoin/blocks/blk00211.dat | less
1333277: 5768 656e 2069 6e20 7468 6520 636f 7572 When in the cour
1333287: 7365 206f 88ac 2202 0000 0000 0000 1976 se o.."........v
1333297: a914 6620 636f 736d 6963 2065 766f 6c75 ..f cosmic evolu
13332a7: 7469 6f6e 2c20 88ac 2202 0000 0000 0000 tion, ..".......