This meta-analysis from 1992 by Hopkins of 76 trials where food was supplied by a metabolic kitchen nicely answers this question. 
The rise in cholestrol on consuming cholesterol is closely tied to the baseline consumption of dietary cholesterol. So, you can see that if you're on a plant based diet ( or vegan ), with zero cholesterol intake, then consuming an egg containing 250 mg of cholesterol will raise your serum cholesterol by about 0.35 mmol/L (13.5 mg/dl) but if you're on an average american diet of 400 mg/day of cholesterol, then the rise is only 0.1 mmol/L (3.9 mg/dl). This is the reason why many studies were confused by the effect of eggs on dietary cholesterol as they didn't understand the relationship between baseline intake and added consumption.
I haven't read link 3 above, but usually dietary guidelines advise that you don't exceed your cholesterol intake by 300 mg/day but they do not advise that you should consume cholesterol. There is no biological need to consume cholesterol since we manufacture all of our requirements in the liver.
 Hopkins PN. Effects of dietary cholesterol on serum cholesterol: a meta-analysis and review. Am. J. Clin. Nutr. 1992 Jun;55(6):1060-70. PubMed PMID: 1534437. Full text