Worth reading. Ewan includes some comments regarding the growing use of pre-print platforms:
Blogging is nice, because it is accessible to a broader audience and allows for a more chatty, 'natural language' style – but if the main purpose is to communicate with scientists, pre-publication servers are a better way to go
Additionally, I think figshare is another outlet that can be used for dissemination of science material that may not suitable for a peer reviewed publication. One cool thing about using figshare for posting preliminary data or commentary pieces is that articles are allocated a DataCite DOI and can therefore be cited.