In the blogosphere, accelerationism is a philosophy that takes many forms. Generally speaking, accelerationism states that things need to get worse, or more extreme, before they get better.
Marxist or Socialist Accelerationism
The most famous form of accellerationism is Marxist accellerationism, which holds that Capitalism will eventually run out of steam, if allowed to run its course. Under this theory, Capitalism should be intensified, and in doing so hasten its unraveling, like how a bright candle burns out faster.
Certain forms of Marxist accellerationism hold that most other Marxist political activism is futile or ill-considered, when they are based on the idea that socialism must be forced into being by unnatural action rather than organic processes.
An example of Marxism that is not accellerationist is arguably Leninism, which holds that the state needs to actively interfere to bring about Socialism, and it is not enough to simply allow Capitalism to run its course.
Technological accellerationism is the form of accellerationism discussed by blogs like that of Nick Land. He, for example, has argued that modernity is defined excessively by positive feedback loops. Moore's Law is an example of such a feedback loop. This will bring about points of no return, defined either by excessive scarcity, or the inability to predict what will emerge.
This version of accellerationism is connected to notions of the singularity, and writings like Meditations on Moloch.
Far-right accellerationism holds that the nation is in a deteriorating state, and needs to continue to deteriorate in order to unleash direct conflict; and their goals will be accomplished on the other side of that conflict. This version of accelerationism has motivated some far-right terrorism.
It can be argued that Christian beliefs in the "Judgement Day" are a form of accellerationism, similar to technological accellerationism in that the judgement day is a point of no return.