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There's a lot of guessing, dictionary attacks, and various other techniques being used by spammers. Also, common addresses like info@ and sales@ are just assumed to pretty much always be valid (and often are for many domains). There's also a time delay wherein spam increases for an address the longer the spammers know about it because they sell lists to each other. I operate a number of spam traps and have noticed that the spam generally increases over time despite blocking based on a combination of DNS-based blacklists and filters.
– Randolf Richardson
Commented Aug 12, 2011 at 4:06

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Correct minor typos or mistakes
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create code fences with backticks ` or tildes ~
```
like so
```
add language identifier to highlight code
```python
def function(foo):
print(foo)
```
put returns between paragraphs
for linebreak add 2 spaces at end
_italic_ or **bold**
indent code by 4 spaces
backtick escapes `like _so_`
quote by placing > at start of line
to make links (use https whenever possible)
<https://example.com>
[example](https://example.com)
<a href="https://example.com">example</a>

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