To make web sites "sticky", so people don't go elsewhere.
That doesn't apply to YC, so when posting here, please give the link to the original source. Sometimes it's necessary to dig through three levels of blog to get to the source. (This seems to be especially true of articles about battery chemistry and surface chemistry ("nanotechnology").)
That doesn't apply to YC, so when posting here, please give the link to the original source. Sometimes it's necessary to dig through three levels of blog to get to the source. (This seems to be especially true of articles about battery chemistry and surface chemistry ("nanotechnology").)